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Home / Civil Engineering Methods / Procedure for Filling Core Sonic Pipes

Procedure for Filling Core Sonic Pipes

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The following describes the procedure for filling core sonic pipes with cement grout. Prepare the mix as per the proposed mix design given below using following equipment’s:

  • Mixer
  • Piston Pump
  • Grout hose of suitable length

Grout Mix Design For Filling Core Sonic Pipes

For Grout Strength 30N/mm2

Mix  Design OD Weights
MSRC (Type II) 1420 kg/m3
Microsilica 70 kg/m3
Free Water 510 ltr/m3
Super Plasticizer (Conplast-SP432) 7 ltr/m3
Fresh concrete density 2000 kg/m3

For 100 Liter Mix

Mix  Design OD Weights
MSRC (Type II) 142 kg
Microsilica 7 kg
Free Water 51 ltr
Super Plasticizer (Conplast-SP432) 0.7 ltr

For 100 kg Cement

Mix  Design OD Weights
MSRC (Type II) 100 kg
Microsilica 5 kg
Free Water 36 ltr
Super Plasticizer (Conplast-SP432) 0.5 ltr

GROUT MIX DESIGN (Alternative)

Grout Mix Design For Filling Core Sonic Pipes

For 100 kg cement

Mix  Design OD Weights
Cement 100 kg
Dune Sand 88 kg
Microsilica (ELKEM) 3 Kg
Free Water 35 ltr
Super Plasticizer (Conplast-SP432) 1.5 ltr

Grout Strength: 30 N/mm2Filling-Core-Sonic-Pipes

Filling Core Sonic Pipes

  • The grout has to be mixed for at least 5 minutes using Bauer’s mixer and piston pump.
  • The grout hose will be connected at one end to the piston pump and the other end to the bottom of sonic pipe.
  • The grout will then be allowed to slowly and continuously flow to the core sonic pipes through the grout hose.
  • At the same time of pouring of grout, the grout hose has to be pulled up in a similar way as done in the tremie method.
  • The quantity of grout entering the sonic pipe can be measured by counting the strokes of the piston pump (1 stroke = 0.3 ltrs of grout).
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